oDepends on the complexity of the key?? Manages how applications access resources, OS Security Concepts Information Security Notes pdf – IS pdf notes – IS notes pdf file to download are listed below please check it – Information Security Notes pdf Book Link: Complete Notes. Demonstrate ease of use of new system These notes are useful if you are the student of Federal Board in Pakistan. Specific Open source , file CMPSC 443 Introduction to Computer and Network Security - Spring 2012 - Professor Jaeger Page Malware • Malware - software that exhibits malicious behavior (typically manifest on user system) – … Unix Security Basics (Lecture Notes: pdf) Users and Groups. •The purpose of computer security is to device ways to prevent the weaknesses from being ○ Contains less implementation issues than MD5 (as it should!) password hash Comparison table Concept of Cyberspace. Lecture 25 Topic: Network security and privacy (with Jaeyeon Jung). ○ Developed by Ron Rivest in 1991 Here you can download the free lecture Notes of Information Security Pdf Notes – IS Pdf Notes materials with multiple file links to download. Solutions to Computer Security Threat Neha Tyagi, PGT CS KV 5 Jaipur II Shift •The entire computer security is based on a system of actions and safeguards which have been categorized in two ways- 1.Active Protection : It includes installing and using an antivirus that have internet security also which shows protection against threats such as viruses, spyware and PC intrusion. Categories . Confidentiality … oWorm Permissions and File System Security, Identfication and authorisation oSecurity guards Open source vs commercial software network software bca notes. oProvides instant power With a lot happening on the web, it becomes an utmost need to secure the content from loss and interception as there hovers a constant vision of malice to disrupt the web world security. Security Violations Categories zB h f fid ti litBreach of confidentiality zBreach of integrity zBreachofavailabilityBreach of availability zTheft of service zDenial of service Methods zMasquerading … Job opportunity Certain information must be kept secret from unauthorised access. Blackmail Feel free to download our IT tutorials and guide documents and learn the joy of free learning. ○ Superseded by the SHA-2 family Make a table Spys on everything you do and records information, Adware Getting a password for a computer login ○ Outputs 128 bit hash values Worm Scan, locate The most important of these are performance, reliability, and security… ○ Secure communications protocols o32-bit numeric address (IPv4) is written in decimal as four numbers Use of statistics Unit 2. - 1 INFSCI 2935: Introduction to Computer Security 6 System commands using primitive operations lprocess p creates file f with owner read and write (r, w) will be represented by the following: Command … Types Interception/disclosure ○ Outputs 160 bit hash values Link: Unit 3 Notes. 6. NOTES . monitor actions on the victim’s computer Termination, Instinctive risk assessment oFirewalls oKernel mode oDistribution ▪ A backdoor into a system and allow an attacker to execute or Concept of Cyberspace Banks Transportation Sectors Health Sectors. Threaten James Tam What Is Hardware? Concept of Cyberspace Militaries. The knowledge of computers and the Internet is very much needed to incorporate with today's generation. Smartcards, tokens making some progress Fabrication Please send any lecture note and problem sheet corrections to adk@cs.ox.ac.uk; an errata will appear on the course website if necessary. Refer to the security of computers against intruders (e.g., hackers) and malicious software(e.g., viruses). Introduction to computers 1 James Tam Introduction To Computers: Hardware and Software In this section of notes you will learn about the basic parts of a computer and how they work. oConsequences, Propagation Concealment Payload Cyber Crime Computer crime, or cybercrime, is any crime that involves a computer and a network. SECURITY LECTURE NOTES for Bachelor of Technology in Computer Science and Engineering & Information Technology Department of Computer Science and Engineering & Information Technology Veer Surendra Sai University of Technology (Formerly UCE, Burla) Burla, Sambalpur, Odisha Lecture Note Prepared by: Prof. D. Chandrasekhar Rao Dr. Amiya Kumar Rath Dr. M. R. Kabat . 1 UNIT -I Introduction to Computer Networks 1.1 Data Communication:When we communicate, we are sharing information. Computer Networks Notes. Threat trees will be in the exam 1.2.2 Network Criteria A network must be able to meet a certain number of criteria. Computer security Prof. dr. Frederik Questier - Vrije Universiteit Brussel Workshop for Lib@web 2015 - International Training Program @ University of Antwerp Management of Electronic Information and Digital Libraries 2. 3. Environment variables and attacks (Chapter 2) ○ Hash function collisions are a negative trait These skills are very useful nowadays as most of our … d Although we have computers at multiple sites, we reject the phone company’s approach d Because we use diverse computer architectures, we reject the computer vendors’ approach d Because a variety of network technologies are possible, we reject the network … M-1, M-2, M-3, M-4 and M-5 (Remaining Module notes will be Uploaded soon) binary objects are identical Data is stored on 1 sector at a time vulnerability, ○ MACs are Message Authentication Codes, ○ HMACs combine hash functions and secret keys to not only provide integrity but also Computer Crime Related MCQ. Acceptance Over privileged users or system processes Prevention ○ Instead of just taking the object as an input to the hash function, a HMAC or keyed hash ○ TIGER In these brief notes, I often give references to various documents. Ransomware 1.1 Computer Security Concepts 10 1.2 Threats, Attacks, and Assets 18 1.3 Security Functional Requirements 23 1.4 A Security Architecture for Open Systems 26 1.5 Computer Security Trends 31 1.6 Computer Security … Risk assessment is instinctive on a day to day basis A sector is typically 512 bytes, Aims of security BotNets oSituational, What is malware 1,3,4 and class notes) Read Pfleeger Ch. Integrity oRemote Access Trojan Symantec, a maker of security … ensures that information and systems have not been altered in an unauthorised way oEach malware specimen is unique Computer Networks subject is included in B Tech CSE, BCA, MCA, M Tech. Non-Repudiation, THREAT TREES May alter/hide security settings, process, files, system drives, network ports and oPassword, What is an OS 4. Related Studylists. CNQNAUNITI. Breaches, Availability The textbook is: 1. Kidnaps computer and charges to remove it Lecture 22 Topic: Web security and privacy. oCommercial or open source, Lecture notes, lectures 1-8 - Computer security notes, Copyright © 2020 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01. Which is better Establishing what the entity is allowed to do, Notes As more devices are being used ect... more people are developing malware from it, Why does a system become vulnerable to malware Understand security Detection external system to test against to eliminate the limit on the number of tests you can HMAC authenticity SES # LECTURE TOPICS AND NOTES READINGS AND HANDOUTS; 1. Privilege Separation (PDF) 5: Guest Lecture: Paul Youn from iSEC Partners (no notes) 6: Capabilities (PDF) 7: Sandboxing Native Code (PDF) 8: Web Security Model (PDF) 9: Securing Web Applications (PDF) 10: Symbolic Execution (no notes) 11: Ur / Web (no notes) 12: Network Security (PDF) 13: Network Protocols (PDF) 14: SSL and HTTPS (PDF… EG 2 numbers the a 5 letter word...ectk oOutcomes Data at rest encryption Which is more trustworthy Locks files, computer, sectors ect, Scareware computers (usually a personal computer or workstation) handle a subset. Rainbowcrack program Security is difficult to sell Interface between the user and computer hardware Availability To be clear, you are not to use this or any other similar information to test the security … Audio recording 8. oForensic analysis, Determining appropriate control oRansomware Required reading: Pfleeger and Pfleeger, Section 8.1 (Security … oDevelops cant hide things Sender uses signing algorithm to sign message Aims of security oInfection types ○ SHA1, SHA256, SHA oBattery backup for constant power A zombie is a machine controlled by a master, 08.19 Week 4 Lecture Slides CS – Crypto 1, 08.26 Week 5 Lecture Notes CS – Data Integrity, 1 Parity Bits ○ The probability that two objects happen to result in the same digest value is so small ○ Storage of passwords Fahad Khan Data Security Data security is about keeping data safe. If the result is true, the message is accepted; otherwise it is rejected It is a threat to any user who uses a computer network. Threat Availability Set-UID Programs and Vulnerabilities (Chapter 1) Vulnerabilities and Attacks . • Disconnect your computer from the wireless network when using a wired network • Patch and update your operating system • Install and update your anti-virus and anti-malware with the latest security definitions • Create a unique user ID when sharing a computer … oNon-repudiation/accountability ○ When two entirely different digital objects produce the same hash output Complex mathematical algorithm ○ Hash algorithms must have a very low collision rate 101 0 obj <> endobj 126 0 obj <>/Encrypt 102 0 R/Filter/FlateDecode/ID[<1867A4F4C68D4CE28B0BA541463118DF>]/Index[101 53]/Info 100 0 R/Length 119/Prev 605480/Root 103 0 R/Size 154/Type/XRef/W[1 3 1]>>stream oScareware oPurposes ○ The results of hash functions are routinely used in a court of law to prove that two ACM CCS (2013): 145–60. Display forced advertising Key logger We autonomously assess the risk involved with everyday life, Generic Threat Categories Link: Unit 4 Notes. 1 Syllabus The syllabus contains information on class policy, contact information, etc. oWorks on Microsoft Windows only Separation and protection of objects Spyware but then sends specific ads to computer, Ransomware oFinancial incentive Good Security Standards follow the "90 / 10" Rule: 90% of security safeguards rely on an individual ("YOU") to adhere to good computing practices; 10% of security safeguards are technical. Exam 1 on 10 Oct 2013 in class; covers computer security (Ch. Some have no conventions at all. The computer may have been used in the commission of a crime, or it may be the target. Lecture 26 Difficulties in quantifying loss. Software designed to infiltrate, damage or disrupt a computer system without the, Consequences ... "Computer Virus: A Major Network Security Threat," International … Introduction to networks, internet, protocols and standards, the OSI model, layers in OSI model, TCP/IP suite, Addressing, Analog and digital signals. Types of Security • Computer Security – generic name for the collection of tools designed to protect data and to thwart hackers • Network Security – measures to protect data during their transmission • Internet Security … Hardware security The protection of all hardware components used in computer system is known as hardware security. oEnvironmental Tutorix. In Unit 4: Web Applications And Security of Class 10 IT CODE 402 you will learn about the basics of networking and accessibility options. Computer Security is the process of detecting and preventing any unauthorized use of your laptop/computer. • Computer Security – generic name for the collection of tools designed to protect data and to thwart hackers • Network Security – measures to protect data during their transmission • Internet Security – measures to protect data during their transmission over a collection of interconnected networks . Common uses include oPasswords In these notes… 7. Packages. Hard ware theft remedies Physical cryptography and network security lecture notes. 07.29 Week 1 Lecture Notes CS – Intro. Passwords still heavily relied upon as a means of authentication Management may ask. ○ Developed by NSA and approved by NIST Computer networks notes – UNIT I. Slides: PDF. 4 Read Pfleeger Ch. How would you convince them to purchase, apply and use security 13. •Computer security is refers to techniques for ensuring that data stored in a computer cannot be read or compromised by any individuals without authorization. Notes. oSupport structure Defence Real vs perceived PDF | Computer viruses are a nightmare for the computer world. Below is the PDF notes for the Chapter 6, and its title is "Computer Security and Ethics" This is the content that you can find in the PDF… oIPv6 addresses are 128-bit IP address written in hexadecimal and separated Authenticity Hard drives could be encrypted/decrypted on the fly by main-boards or by dedicated, Data Storage In these “Computer Graphics Notes PDF”, you will introduce fundamental concepts of Computer Graphics with a focus on modeling, rendering, and interaction aspects of computer graphics.These notes emphasize the basic principles needed to design, use, and understand computer graphics systems. }�����|胗��� ���7�V��z7�+���䪍���FM&H �:c��5�e�����kZ�����n���5�'0�+�dPOA��6�.�i�8u;;�ߟ�3�}����c����Ҥ�� ��k���є�]�cS�I5�Ȯ. oGenerally exploits poorly configured devices 2. Isn't this just an IT problem? Identification Authentication, Authorisation Examples United States is the “least cyber-secure country in the world,” with 1.66 attacks per computer during the previous year – compared with just 0.1 attempted attacks per computer in England. Rootkit PDF | Computer viruses are a nightmare for the computer world. Wired vs wired networking Lecture notes files. Old Material Links. Pay money Computer Security: Art and Science, Matt Bishop (available at co-op). oShield, Identification Slides: PDF. notes. Typic ally, the computer to be secured is attached to a … Chapter 11 of Computer Security, Gollmann; Chapter 5 of Security Engineering, Anderson; The Cryptography module Cryptography module; Tools for encryption: Truecrypt; Further/Background … Run on infected device with admin/root access Offline ○ Faster than SHA- Networks Authenticity Online Tutors. wrong, Countermeasures Preview text. Can typically be removed with AV software but (some) damage to the system may Statistics on computer abuse Windows nt logon process exploit, Fat32 vs ntfs Scars you into thinking that your computer is compromised or has done something Signatures Many cyber security threats are largely avoidable. Overview of Computer Security (Lecture Notes: pdf) Software Security. A note on security In this course, you will be exposed to information about security problems and vulnerabilities with computing systems and networks. Data manipulation Update – to correct inaccurate data and to change old data with new data Insert – to add new records in the file when new data are obtained. oLog file analysis Stored in plaintext, Hard ware encryption Scare tactics Notes of Lecture 1 . 12. Lecture 2 Topic: Introduction, risk analyses, ethics. servers, oCommand and control lObject (O: set of all objects) ¡Eg. Would you trust open source or commercial encryption software Preview Computer Security Tutorial (PDF … Physical storage of portables Bribe legitimate Can infect other programs by modifying them On a more serious note, are connected . ○ Considered academically broken Lecture 23 Guest lecturer: Jon Callas, cofounder, CTO, and CSO of PGP Corporation. IPv Interruption Social life ocryptography The receiver receives the message and the signature and applies the verifying algorithm to Virus oA programmer puts code into software for the payroll system that makes, Spyware longhorn_notes-computer_studies_form_one_term_2.pdf: File Size: 816 kb: File Type: pdf: Download File . Components of computer system. oPubic scrutiny Network Security:Overview of Network Security, Authentication, Multimedia Networking and content distribution Networks Voice-over-IP. data communications and networks pdf lecture notes. Establishing who you are, Authentication Generic threats Depends on context Download CN notes pdf unit – 1. Character Set Unit 4. ○ Basically a password for your hashing values The objective of this module is to give students basic knowledge of computer security. "Honeywords: Making Password-Cracking Detectable." 3 Cryptographic Hash Functions Find written copy Why do I need to learn about Computer Security? Cameras Devise criteria oSecurity gurads Performs a malicious action as a result of a logic condition 5 DIGITAL Signatures Link: Unit 2 Notes. program. access, ○ Is computationally more intensive than MD oRootkit %PDF-1.6 %���� The computer equipment, software and data need to be protected from physical harm like fire, lightening, water, etc. This is because of the numerous people and machines accessing it. Uninterrupted power supply Mordern tech uses multi factor authentication, Authorisation Will be worth 20% of the exam oOpen to more scrutiny "%�A$�$���} Delete – to … SECURITY LECTURE NOTES for Bachelor of Technology in Computer Science and Engineering & Information Technology Department of Computer Science and Engineering & Information Technology Veer Surendra Sai University of Technology (Formerly UCE, Burla) Burla, Sambalpur, Odisha Lecture Note … CCTV monitoring Steal 5 Security Center, the official evaluator for the Defense Department, maintains an Evaluated Products List of commercial systems that it has rated according to the Criteria. Data manipulation ... Hardware Security – used to protect the computer hardware –used to protect software and the loss of data files Network Security – used to protect the network system . oTrojan These skills are very useful nowadays as most of our work is done on computers. A flaw or weakness in the design, implementation or operation of a system oEncompasses power surge/spike protection, 2 hours working time, 5 minutes reading time, Which part of the security is breached all of which are physical objects that can be touched.3 1 … oSimplicity as well as damage or theft, which is possible by hardware security which helps in protection of computer … Attacks may never be detected Attacks may never be reported The Criteria is a technical document that defines many computer security … What is shell code ▪ Social Engineering Use good, cryptic passwords that can’t be easily guessed - and keep your passwords secret ! Course Introduction (PDF) 2. Different techs can be used for authentication or identification or both, Password attacks often occur off-line using (off line means lifting the hast data base to an �+$��20�����qБ��V=0 �� endstream endobj startxref 0 %%EOF 153 0 obj <>stream File Permissions: access control, umask, chmod, chown, chgrp, Set-UID. ○ MD4 ,MD Computer security is one of the most important issues in organizations which cannot afford any kind of data loss. ○ SHA-256, SHA-384 and SHA- Evolution of technology has focused on the ease of use while the skill level needed for exploits has decreased. Establishing that the entity is actually who they say they are Non-Repudiation, Confidentiality Malware (7 types) Drug oAttacker fine tunes their Trojan to steal information of interest to them only Malware that turns host into a zombie The Information Security Pdf Notes – IS Pdf Notes. I had the privilege of taking 6.001 from Gerry Sussman when I was a first year student at MIT, and that course awakened me to the power and beauty of computing, and inspired me to pursue a career as a teacher and researcher in Computer Science. Threats act on or exploit vulnerabilities. computer networks pdf notes. • Hardware is the physical components of a computer system e.g., a monitor, keyboard, mouse and the computer itself. 4 Hash function longhorn_notes-computer_studies_form_one_term_1.pdf: File Size: 608 kb: File Type: pdf: Download File. Transferal Phases, Logic Bomb oSometimes false positives occur oSurveillance 30 nodes Link: Unit 1 Notes. A defined type of characters the combination. Types of threats : users, processes, agents, etc. Risk control Psyb0t Network scanning/recon tools Consequences, oRelevant to their context/situation perform), Password Salts Dif between IPv4 and IPv Enable profiteering scams All are welcome. ○ And many others Use cameras to record screen , ▪ Crack (software) Access card control It involves the process of safeguarding against trespassers from using your personal or office based computer resources with malicious intent or for their own gains, or even for gaining any access to them accidentally. oAwakes when a particular site is accessed Computer hardware is the collection of physical elements that constitutes a computer system. 7. Naming of tools/programs oLaw enforcement that it is not even worth considering Created by Kim (2013) 30 9. �����&��� INFSCI 2935: Introduction of Computer Security 1 September 4, 2003 Introduction to Computer Security Lecture 2. h�bbd```b``~"���R�$"9��ekA$�20[ ,� �2���S��`��d{s Rainbow tables .7Z�����с��:��K�i��6�㸘�J�5Ed�}�u� �'�-:�g\y~������~���`9�}X;�/�K�dSi�D6h�[F+���(�����}1��R�wt�Y|��#� ��d���Z5 ��9Q��n���P!bH�Ԅi��q�H#5j_�8gxN�F��c�C.�m��yU�@��L�PJ��}���Y�OEzn9b�;@��?�Hμ��;S �ͨ_!�_�%�v Ellectrical issue mitigation strategies Computer Security 1. microprocessor hand written full notes download student. This module covers the following topics: threats to computer systems, network security fundamentals, secu-rity in a layered protocol architecture, authentication in computer systems, access Unit 1. Mitigation ○ Verifying that evidence has not been tampered with oTargets Linux based ADSL routers Modification COMPUTER NETWORKS Lecture Notes DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING SHRI VISHNU ENGINEERING COLLEGE FOR WOMEN (Approved by AICTE, Accredited by NBA, Affiliated to JNTU Kakinada) BHIMAVARAM – 534 202. Message and signature are sent to the receiver Slides: PDF. RFID tagging Sub - Topics Output Devices. The meaning of the term computer security has evolved in recent years. Integrity Auditing by colons. Example: The lock on the door is the 10%. Unix Security Basics (Lecture Notes: pdf) Users and Groups. Trojan For Free O Level Computer Science Notes Visit: olevelcomputerscience.wordpress.com Data Security & Ethics O Level Computer Science Compiled By: Engr. Lecture slides, lecture 1-7 Lecture notes, lectures 1-6 Exam Review Notes Sample Questions Computer Security Notes CS Assignment 1. ... 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